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[GPU] Remove register reinterpret_casts + WAIT_REG_MEM volatility

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Hopefully prevents some potential #1971-like situations.

WAIT_REG_MEM's implementation also allowed the compiler to load the value
only once, which caused an infinite loop with the other changes in the
commit (even in debug builds), so it's now accessed as volatile. Possibly
it would be even better to replace it with some (acquire/release?) atomic
load/store some day at least for the registers actually seen as
participating in those waits.

Also fixes the endianness being handled only on the first wait iteration in
WAIT_REG_MEM.
This commit is contained in:
Triang3l
2024-05-12 17:17:30 +03:00
parent f0ad4f4587
commit 376bad5056
19 changed files with 336 additions and 318 deletions
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4
src/xenia/gpu/graphics_system.cc
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@@ -201,7 +201,7 @@ uint32_t GraphicsSystem::ReadRegister(uint32_t addr) {
}
assert_true(r < RegisterFile::kRegisterCount);
return register_file_.values[r].u32;
return register_file_.values[r];
}
void GraphicsSystem::WriteRegister(uint32_t addr, uint32_t value) {
@@ -219,7 +219,7 @@ void GraphicsSystem::WriteRegister(uint32_t addr, uint32_t value) {
}
assert_true(r < RegisterFile::kRegisterCount);
register_file_.values[r].u32 = value;
register_file_.values[r] = value;
}
void GraphicsSystem::InitializeRingBuffer(uint32_t ptr, uint32_t size_log2) {